Definition of Telegraph. Meaning of Telegraph. Synonyms of Telegraph

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Definition of Telegraph

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Acoustic telegraph
Acoustic A*cous"tic (#; 277), a. [F. acoustique, Gr. ? relating to hearing, fr. ? to hear.] Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory. Acoustic duct, the auditory duct, or external passage of the ear. Acoustic telegraph, a telegraph making audible signals; a telephone. Acoustic vessels, brazen tubes or vessels, shaped like a bell, used in ancient theaters to propel the voices of the actors, so as to render them audible to a great distance.
Duplex telegraphy
Duplex Du"plex, a. [L., fr. duo two + plicare to fold. See Two, and Complex.] Double; twofold. Duplex escapement, a peculiar kind of watch escapement, in which the scape-wheel has two sets of teeth. See Escapement. Duplex lathe, one for turning off, screwing, and surfacing, by means of two cutting tools, on opposite sides of the piece operated upon. Duplex pumping engine, a steam pump in which two steam cylinders are placed side by side, one operating the valves of the other. Duplex querela [L., double complaint] (Eccl. Law), a complaint in the nature of an appeal from the ordinary to his immediate superior, as from a bishop to an archbishop. --Mozley & W. Duplex telegraphy, a system of telegraphy for sending two messages over the same wire simultaneously. Duplex watch, one with a duplex escapement.
Electro-telegraphic E*lec`tro-tel`e*graph"ic, a. Pertaining to the electric telegraph, or by means of it.
Electro-telegraphy E*lec`tro-te*leg"ra*phy, n. The art or science of constructing or using the electric telegraph; the transmission of messages by means of the electric telegraph.
Facsimile telegraph
Facsimile Fac*sim"i*le, n.; pl. Facsimiles (-l?z). [L. fac simile make like; or an abbreviation of factum simile made like; facere to make + similes like. See Fact, and Simile.] A copy of anything made, either so as to be deceptive or so as to give every part and detail of the original; an exact copy or likeness. Facsimile telegraph, a telegraphic apparatus reproducing messages in autograph.
Hertzian telegraphy
Hertzian Hertz"i*an, a. Of or pert. to the German physicist Heinrich Hertz. Hertzian telegraphy, telegraphy by means of the Hertzian waves; wireless telegraphy. H. waves, electric waves; -- so called because Hertz was the first to investigate them systematically. His apparatus consisted essentially in an oscillator for producing the waves, and a resonator for detecting them. The waves were found to have the same velocity as light, and to undergo reflection, refraction, and polarization.
Indicator telegraph
3. (Mech.) The part of an instrument by which an effect is indicated, as an index or pointer. 4. (Zo["o]l.) Any bird of the genus Indicator and allied genera. See Honey guide, under Honey. 5. (Chem.) That which indicates the condition of acidity, alkalinity, or the deficiency, excess, or sufficiency of a standard reagent, by causing an appearance, disappearance, or change of color, as in titration or volumetric analysis. Note: The common indicators are litmus, trop[ae]olin, phenol phthalein, potassic permanganate, etc. Indicator card, the figure drawn by an engine indicator, by means of which the working of the engine can be investigated and its power calculated. The Illustration shows one form of indicator card, from a steam engine, together with scales by which the pressure of the steam above or below that of the atmosphere, corresponding to any position of the engine piston in its stroke, can be measured. Called also indicator diagram. Indicator telegraph, a telegraph in which the signals are the deflections of a magnetic needle, as in the trans-Atlantic system.
Needle telegraph
Needle Nee"dle, n. [OE. nedle, AS. n?dl; akin to D. neald, OS. n[=a]dla, G. nadel, OHG. n[=a]dal, n[=a]dala, Icel. n[=a]l, Sw. n[*a]l, Dan. naal, and also to G. n["a]hen to sew, OHG. n[=a]jan, L. nere to spin, Gr. ?, and perh. to E. snare: cf. Gael. & Ir. snathad needle, Gael. snath thread, G. schnur string, cord.] 1. A small instrument of steel, sharply pointed at one end, with an eye to receive a thread, -- used in sewing. --Chaucer. Note: In some needles(as for sewing machines) the eye is at the pointed end, but in ordinary needles it is at the blunt end. 2. See Magnetic needle, under Magnetic. 3. A slender rod or wire used in knitting; a knitting needle; also, a hooked instrument which carries the thread or twine, and by means of which knots or loops are formed in the process of netting, knitting, or crocheting. 4. (Bot.) One of the needle-shaped secondary leaves of pine trees. See Pinus. 5. Any slender, pointed object, like a needle, as a pointed crystal, a sharp pinnacle of rock, an obelisk, etc. Dipping needle. See under Dipping. Needle bar, the reciprocating bar to which the needle of a sewing machine is attached. Needle beam (Arch.), to shoring, the horizontal cross timber which goes through the wall or a pier, and upon which the weight of the wall rests, when a building is shored up to allow of alterations in the lower part. Needle furze (Bot.), a prickly leguminous plant of Western Europe; the petty whin (Genista Anglica). Needle gun, a firearm loaded at the breech with a cartridge carrying its own fulminate, which is exploded by driving a slender needle, or pin, into it. Needle loom (Weaving), a loom in which the weft thread is carried through the shed by a long eye-pointed needle instead of by a shuttle. Needle ore (Min.), acicular bismuth; a sulphide of bismuth, lead, and copper occuring in acicular crystals; -- called also aikinite. Needle shell (Zo["o]l.), a sea urchin. Needle spar (Min.), aragonite. Needle telegraph, a telegraph in which the signals are given by the deflections of a magnetic needle to the right or to the left of a certain position. Sea needle (Zo["o]l.), the garfish.
Pantelegraph Pan*tel"e*graph, n. [Pan- + telegraph.] See under Telegraph.
Phototelegraphy Pho`to*te*leg"ra*phy, n. Telegraphy by means of light, as by the heliograph or the photophone. Also, less properly, telephotography. -- Pho`to*tel"e*graph, n. -- Pho`to*tel`e*graph"ic, a.
Phototelegraphy Pho`to*te*leg"ra*phy, n. Telegraphy by means of light, as by the heliograph or the photophone. Also, less properly, telephotography. -- Pho`to*tel"e*graph, n. -- Pho`to*tel`e*graph"ic, a.
Phototelegraphy Pho`to*te*leg"ra*phy, n. Telegraphy by means of light, as by the heliograph or the photophone. Also, less properly, telephotography. -- Pho`to*tel"e*graph, n. -- Pho`to*tel`e*graph"ic, a.
Radiotelegraph Ra`di*o*tel"e*graph, n. [Radio- + telegraph.] A wireless telegraph.
Radiotelegraphic Ra`di*o*tel`e*graph"ic, a. Of or pertaining to radiotelegraphy; employing, or used or employed in, radiotelegraphy.
Radiotelegraphy Ra`di*o*te*leg"ra*phy, n. [Radio- + telegraphy.] Telegraphy using the radiant energy of electrical (Hertzian) waves; wireless telegraphy; -- the term adopted for use by the Radiotelegraphic Convention of 1912.
telegraph creepers
Creeper Creep"er (kr[=e]p"[~e]r), n. 1. One who, or that which, creeps; any creeping thing. Standing waters are most unwholesome, . . . full of mites, creepers; slimy, muddy, unclean. --Burton. 2. (Bot.) A plant that clings by rootlets, or by tendrils, to the ground, or to trees, etc.; as, the Virginia creeper (Ampelopsis quinquefolia). 3. (Zo["o]l.) A small bird of the genus Certhia, allied to the wrens. The brown or common European creeper is C. familiaris, a variety of which (var. Americana) inhabits America; -- called also tree creeper and creeptree. The American black and white creeper is Mniotilta varia. 4. A kind of patten mounted on short pieces of iron instead of rings; also, a fixture with iron points worn on a shoe to prevent one from slipping. 5. pl. A spurlike device strapped to the boot, which enables one to climb a tree or pole; -- called often telegraph creepers. 6. A small, low iron, or dog, between the andirons. 7. pl. An instrument with iron hooks or claws for dragging at the bottom of a well, or any other body of water, and bringing up what may lie there. 8. Any device for causing material to move steadily from one part of a machine to another, as an apron in a carding machine, or an inner spiral in a grain screen. 9. pl. (Arch.) Crockets. See Crocket.
Telegraph plant
Telegraph plant Telegraph plant An East Indian tick trefoil (Meibomia gyrans), whose lateral leaflets jerk up and down like the arms of a semaphore, and also rotate on their axes.
Telegrapher Te*leg"ra*pher, n. One who sends telegraphic messages; a telegraphic operator; a telegraphist.
Telegraphical Tel`e*graph"ic*al, a. Telegraphic. -- Tel`e*graph"ic*al*ly, adv.
Telegraphical Tel`e*graph"ic*al, a. Telegraphic. -- Tel`e*graph"ic*al*ly, adv.
Telegraphist Te*leg"ra*phist, n. One skilled in telegraphy; a telegrapher.
Telegraphone Te*leg"ra*phone, n. [Gr. th^le far + -graph + ? sound.] An instrument for recording and reproducing sound by local magnetization of a steel wire, disk, or ribbon, moved against the pole of a magnet connected electrically with a telephone receiver, or the like.
Telegraphoscope Tel`e*graph"o*scope, n. [Gr. th^le far + -graph + -scope.] An instrument for telegraphically transmitting a picture and reproducing its image as a positive or negative. The transmitter includes a camera obscura and a row of minute selenium cells. The receiver includes an oscillograph, ralay, equilibrator, and an induction coil the sparks from which perforate a paper with tiny holes that form the image.
telegraphy or telegraph
Wireless Wire"less, a. Having no wire; specif. (Elec.), designating, or pertaining to, a method of telegraphy, telephony, etc., in which the messages, etc., are transmitted through space by electric waves; as, a wireless message. Wireless telegraphy or telegraph (Elec.), any system of telegraphy employing no connecting wire or wires between the transmitting and receiving stations. Note: Although more or less successful researchers were made on the subject by Joseph Henry, Hertz, Oliver Lodge, and others, the first commercially successful system was that of Guglielmo Marconi, patented in March, 1897. Marconi employed electric waves of high frequency set up by an induction coil in an oscillator, these waves being launched into space through a lofty antenna. The receiving apparatus consisted of another antenna in circuit with a coherer and small battery for operating through a relay the ordinary telegraphic receiver. This apparatus contains the essential features of all the systems now in use. Wireless telephone, an apparatus or contrivance for wireless telephony. Wireless telephony, telephony without wires, usually employing electric waves of high frequency emitted from an oscillator or generator, as in wireless telegraphy. A telephone transmitter causes fluctuations in these waves, it being the fluctuations only which affect the receiver.

Meaning of Telegraph from wikipedia

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